UPSC Prelims PYQ 1998: Which metal does not form amalgams?

Which one of the following metals does not form amalgams?

1. Zinc
2. Copper
3. Magnesium
4. Iron

Explanation

Option (d) is correct

• An amalgam is an alloy formed by the combination of a metal with mercury. Metals such as zinc, copper, and magnesium can form amalgams with mercury, whereas Iron does not readily form amalgams because mercury does not effectively wet or react with its surface.

Answer: (d) Iron